基本解释n.培柯同根派生 Perco相关词英汉例句Perco catalytic disulphurization process 汽油催化脱硫的培柯过程Perco cycloversion catalytic reforming 培柯循环转化的催化重整Perco HF alkylation 培柯氟化氢烷基化过程Perco copper sweetening 培柯铜盐脱硫reforming Perco process 贝柯催化重整法Perco更多例句